The English word calendar is derived from the Latin word kalendae, which was the Latin name of the first day of every month. As you probably already know, calendar is a system of organizing days for social, religious, commercial, or administrative purposes.

It has been used since ancient times. Many civilizations and societies have devised a calendar, usually derived from other calendars on which they model their systems, suited to their particular needs. The oldest calendar may be 30,000 years old – an engraved bone plaque found at Blanchard, in the Dordogne region of France. Another ancient prehistoric monument Stonehenge is also thought to be a giant Neolithic calendar.

Nowadays calendars are usually made of paper, and you probably have seen one in your lifetime. However, it doesn’t necessary have to be that way – check out these 15 creative and unusual calendar designs!

1. AOK Apple Calendar

2. Bakery Calendar

3. Balloon Calendar

4. Bubble Calendar

5. Camera Calendar

Designer: Sharad Haksar

6. Flip Calendar

Designer: Tomato Kosir

7. Ink Calendar

Designer: Oscar Diaz

8. “Dorogaya” Magnetic Calendar

9. Calendar Made of Matches

Designer: Yurko Gutsulyak

10. Napkins Calendar

Designer: Stas Aki

11. Cod Liver Oil Calendar

A calendar made with cod liver oil tablets. Pop out a tablet every day for a healthy life.

12. Shredder Calendar

13. Tea Calendar

Designer: Cho Hee Ha

14. T-Shirt Calendar

Designer: Peter Hanberger

15. Urban Calendar

Designer: Robert Feyereisen